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Hummer
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2008
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H2 4D Utility Wagon
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Repair and Diagnosis
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Engine Performance
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Testing & Diagnosis
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Engine Controls And Fuel - 6.2L - DTC P0300 To DTC P1175
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DTC P0451, P0452, P0453, or P0454
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Conditions for Setting the DTC
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P0453
Conditions for Setting the DTC: P0453
The FTP sensor voltage is more than 4.9 volts for more than 5 seconds.